Machine for soldering the covers of bottoms to the bodies of tin boxes.



PATENTED N0v.24,'190s,.

. H. PINNE, JR. 4 v MACHINE FOR SOLDERING" THE COVERS QR BOTTOMS TO THE BODIES 0F TIN BOXES. APPLICATION FILED saw. 5, 1902.

2 SHEETS-SHEET 1.'

N0 MODEL.

Atiur'n s YHE "bum; vrrzns o0 PHOTQ-LITHQ, WASHINGTON, D4 (2 UNITED STATES Patented November 24, 1903.

PATENT OFFICE.

HENRIK FINNE, JR., OF STAVANGER, NORWAY.

MACHINE FOR SOLDERING THE COVERS OR BOTTOMS T THE.BODIES OF TIN BOXES.

SPECIFICATION forming part of Letters Patent No. 744,738, dated November 24., 1903.

Application filed September 5, 1902. Serial No. 122.266. (llo model.)

To all whom it may concern.- 7

Be it known that I, HENRIK FINNE, Jr., mechanical engineer, a subject of the King of Sweden and Norway, residing at Stavanger, Norway, have invented a new-and useful Machine for Soldering the Covers or Bottoms to the Bodies of Tin Boxes, of which the following is a specification.

My invention relates to a machine for rapidly soldering the covers or bottoms to the bodies of tin boxes of any shapehaving outwardly-turned edges, such as are used for containing preserved food.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a side elevation, partly in section, of the machine in position for starting the operations. Fig. 2 is a similar view show: ing the machine at work, some of the parts being broken away. Fig. 3 is a sectional elevation of a detail drawn to a larger scale. Fig. 4jisa front elevation,and Fig. 5 a plan, of the machine. Fig. 6 is asection along the line a bin Fig. 2. Fig. 7 is an elevation of the machine-frame, showing an arrangement for throwing the boxes out of the machine. Fig. 8 is a section along the line 0 din Fig. 7.

The box is introduced either by hand or automatically from the side of the machine onto a plate 2, which has the same outward shape as the body of the box, The plate 2 moves up and down in a receptacle 3, the sides of which closely fit the edges of the plate 2. The plate 2 is guided centrally by means of a rod 4, operated from the under side by a spring 6 and'passing through a coldwater chamber 5, surroundingthe receptacle 3. The spring tends to keep the plate in its uppermost position. (Shown in Fig. 1.) The upper edges of the water-chamber 5 project on three sides a little above the upper surface of the plate 2 when-in its uppermost position; but on the fourth side the edge is cut away to a small extent at 6, Figs. 1, 5, and 6, in order to permit the box 1 to be introduced and removed from the side. The cold water in the tank 5 is constantly kept in circulation by means of the flow and return tubes 7, so as to secure the lowest possible temperature in the receptacle 3.

- On the driving-shaft 8 of the machine two cam disks 9 and 10 are placed besidecach other. The edge of the disk 9 is concentrical except at the partll, where a recess is provided. This cam-disk 9, by means of aroller 12 running thereon,-controls the oscillating motion of the double-armed lever 13, the other end of which by two forks 14 and pins 15 causes the vertical motion of a slide 16. This slide has a bolt 17 passing through it and carrying at its lower end a square frame 18, which latter during the downward movement of the slide 16, by means of spring 19, located between the frame-18 and the lower face of .the slide 16, is pressed down against the outer edges of the box-cover, the slide 16 being arranged in the same central line as the guiderod 4 of the plate 2. A spring 20 constantly tends to counteract the downward movement of the slide 16.

. The cam-disk 10 has two concentric arcs, the smaller of which connects with the outer are by a curved portion 21. by means of a roller 22 running thereon controls the motion of a rocking double-armed lever 23, the outer end of which is jointed to links 24, carryinga ring of gas-jets 25. This gas-ring is of the same shape as the box 1, the jets 26 being arranged very closely together along the inner edges (see Fig.3) and supplied with gas and'air through pipes 27 from a gas-valve 28 through a flexible tube 29 and a ball 30, into which latter also a suitable amount of air is introduced through a pipe 31. The lever 23 is by a link 32 connected with the operating-arm 33 of the gasvalve 28 and by its rocking motion opens and shuts the gas-inlet to the burners 26 of the gas-ring and at the same time raises and lowers the gas-ring 25 itself, but 'always in such a way that when'the ring 25-is raised the gas-valve 28 is opened and when the ring is lowered the gas-valve isshut.

The shaft 8 is driven by a worm-wheel 34 and a worm 35 on a shaft 36, carrying'loose and fast belt-pulleys 37 and 38, respectively.

After having placed the box 1 on'the plate 2 in the position shown in Fig. 1 the shaft 8 is slowly rotated by shifting the belt, by means of the belt-fork 39, onto the fast pulley 38. This is effected by moving over to the right hand the handle 40, which is connected by a yielding intermediate member 41 to. thelower end of the belt-fork arm L3,

This cam-disk pivotally connected to the pin 42. The parts then occupying the position indicated by dotted lines in Fig. 1 and the belt having been moved onto the fast pulley 38 sets the axle 36 and also, by means of the worm 35 and worm-wheel 34, the axle 8 in rotation. The pin 42, forming the pivot for the arm 43, is placed at one end of a pivoted bell-crank 44, the other end 441 of which is bent and at 45, by means of a rod 46, connected to the roller 12 of the lever 13. By the rotation of the shaft 8 in the direction of the arrow the roller 12 is lifted up out of the recess 11 at the same time that the roller 22 on the lever 23 is swung down. By the raising of the roller 12 the rod 46 is raised and the bell-crank44, together with the handle 40, is swung into the position indicated in Fig. 2, so that the machine at this time is in normal operation.

On the other hand, the roller 12 will allow the outer end of the lever 13 to move down, together with the slide 16 and the bolt 17, which latter by the spring 19 will press down the frame 18 with a yielding pressure against the cover of the box 1 and afterward press down the box into the receptacle 3 until the soldering flanges or edges are stopped by the three upper edges of the water-chamber 5. The slide 16 and the frame 18 remain in this position, Fig. 2, until the soldering is completed. At the same time the roller 22 will move down the inner end of the lever 23, whereby the gas-valve 28 is opened and the gas is supplied to the burners 26 of the gasring 25, and the outer end of the lever 23 will move up and raise the gas-ring 25 to a suitable height, so that the gas-jets,which by the opening of the gas-valve are lighted all round by a constan tly-lighted pin-burner burning flame, (not shown,) will touch and heat the outwardly-turned soldering flanges or edges of the box 1, (see Fig. 3,) whereby the sheet of tin or solder placed on the upper surface of -the soldering-flanges is melted. This-condition continues until the roller 22, during the further rotation of the shaft 8, again falls into the other end of the recess 21, whereby the gas-supply is stopped and the gas-ring 25 is lowered, so that the melted tin or solder can harden. The box 1 is constantly kept cool by the circulating cold Water in the chamber 5; but during the heating of the gas-ring the air within the box 1 would expand and produce an interior pressure which might cause the soldering to be imperfect. In order to prevent this, it is only necessary to make a small hole in the box-cover, whereby the interior pressure is relieved. This hole can afterward be easily soldered up by hand. The box is now cooled-in this positionthat is to say, while still held in the machine, but with the gas-ring lowered and without the gas burning-until the shaft 8 has completed one entire revolution. Then the roller 12 again falls into the recess lland the slide 16, together with the frame 18, willbe raised by the action of the spring 20. Not only is the box 1 thereby raised through the action of the spring 6 so that the box can be removed, but the roller 12 also will lower the rod 46, whereby the bell-crank 44 will move back the belt-fork to its initial position, Fig. 1, and the belt Will be brought over onto the loose pulley 37, whereby the machine is automatically stopped.

A number for instance, thirty-of such machines can be placed side by side and driven from a common shaft 8, passing through all of the machines,while the shaft 36 and the gears 34 and 35 are arranged at one end of the workshop and one attendant can serve a nun1berfor instance, six-of machines. The work of this attendant consists in placing the boxes 1, With the unfastened covers, on the plates 2, and as soon as all the workmen have made signs that they have filled their machines the foreman starts all the machines from the end of the shop at the same time by moving the handle 40 to the right. As soon as the soldering is completed the machines will stop automatically after having first released the boxes; but shortlybefore the machines stop arms 47 on the shaft 8, Figs. 4, 5, and 7, come in contact with noses or projections 50, and thereby move a number of pins 49, sliding in the stand of the machines and subjected to the action of springs 48, in such a manner that the springs 48 are compressed and the arms 47 release all the noses 50, whereby the pins 49 become free just at the moment that the machines stop. All the boxes which are standing free are therefore pushed by the springing back of the pins on over the edge 6 to a conveyor-apron in order to be conducted to a place where the small holes in the box-covers are soldered up.

It will be understood that by the above-described arrangement it is also possible to selder the bottom to the body of the box, provided the soldering-flanges are turned outward; also, other means maybe used for heating than the gas-ring described-such, for instance, as a heated copper frame-without departing from the scope of the invention.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a machine for soldering the covers or bottoms to the bodies of tin boxes, the combination of a spring-pressed plate, a receptacle, in which the plate may be moved downward, a pressing-frame, a slide for operating the pressing-frame, a gas or other heating ring surrounding the receptacle, means for operating the slide and means for raising and lowering the ring at proper times with respect'to the operation of the slide.

2. The combination of a plate having a spring-pressed guide-rod, a receptacle, in which the plate may be moved vertically guided by the rod, a chamber surrounding the receptacle and provided with means for constant circulation of cold water thereplate, a slide provided with a pressing-frame,

arranged on the same center line as said plate,

' a gas-ring,surrounding the plate, a lever opcrating the slide, a cam operating said lever automatically, a lever for raising and lower+ ing the gas-ring and a cam for operating the last-named lever automatically, said cams being fixed to the machine driving-shaft.

4. In combination a lever 13 operating a clamping mechanism for the box, a lever 23 operating a heating mechanism for melting the soldering material, cams 9 and 10 provided with suitable recesses 11 and 21 respectively for operating said levers 13 and 23, a gas-valve 28 being opened or shut during the movement of the lever 23 and being by means of pipes in communication with the heating mechanism, and a rod 46 in connection with the lever 13 and operating a beltfork in order to stop the machine automatically, when the lever 13 causes the box to be released. 7 I

5. In combination a machine-shaft, cams fixed to said shaft and operating respectively the clamping mechanism for the box and the heating mechanism for melting the soldering material, and a driving mechanism for the shaft, comprising a worm-wheel, a worm in gear therewith and fixed to an axle, driven by loose and fast belt-pulleys.

6. In combination a machine-shaft, eams fixed thereto and causing the box to be clamped in position and soldered, an axle 36 for driving the machine-shaft and provided with loose and fast pulleys, a belt-fork arranged pivotally on a turnable bell-crank, a hand-lever for operating the fork and a rod 46 being operated from one of said cams and connected with the bell-crank in such a manner, that the belt'is moved onto the loose pul- 1ey and the machine thereby stopped automatically, when the machine-shaft hascompleted one entire revolution.

Z. In combination a machine-shaft, means for causing the box to be clamped in position and soldered during rotation of the shaft, a pin acted by a-spring and provided with a nose, and an arm fixed to the shaft in such a manner, that-the pin is moved against the action of the spring and thereafter loosened, after the box has been released and the soldering is completed, whereby the pin under influence of the compressed springis caused to throw the box out of the machine.

8'. In-combination a number of solderingmachines, all driven from a common shaft passing through all'of them and driven, by means of a suitable gearing, each machine comprising cams, which during rotation cause the boxes to be clamped in position andsoldered, one of the cams of one machine operating the belt-fork for the driving mechanism so as to stop all the machines automatically, when the shaft has completed one entire-revolution.

In witness whereof I have hereunto set my hand in presence of two witnesses.

HENRIK FINNE, JR.

Witnesses:

EILERT OLSEN, Y. BULL ARNITZ. 

